Centrifugal fan lifting device

Abstract

The utility model discloses a centrifugal fan lifting device which comprises a main body assembly and a lifting assembly, the main body assembly comprises a fan frame, a filter screen, a motor and a fan, the filter screen is fixed at one end of the fan frame, the motor is located in the fan frame, the fan is fixed on one side of the motor, and the lifting assembly is arranged at the bottom of the fan frame. Comprising a lifting part, a limiting part and a locking part, the lifting part is arranged at the bottom of the fan frame, the limiting part is located on the lifting part, and the locking part is arranged on the limiting part. The centrifugal fan lifting device has the advantages that the centrifugal fan can be more stable and balanced in the lifting process by lifting the centrifugal fan section by section, the lifting height of each section is small, swinging and shaking of the whole structure can be reduced, and vibration and noise caused by uneven lifting are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a centrifugal fan lifting device. Background Art

[0002] A centrifugal fan is a common air handling device, also known as a centrifugal fan or centrifugal ventilator. It uses centrifugal force to suck in air and accelerate its rotation, then discharges the air to generate airflow. When installing a centrifugal fan, it may be necessary to make lifting adjustments to align the air outlet with the duct or vent, ensuring that the position and height of the centrifugal fan outlet match the actual use requirements, which can improve the ventilation effect and system performance. However, when adjusting the height of the centrifugal fan, the centrifugal fan is usually lifted directly. Direct overall lifting may result in poor stability of the overall structure of the centrifugal fan. Since the centrifugal fan is large, overall lifting may cause structural shaking and instability, increasing the vibration and noise of the equipment. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above problems and / or the problems existing in the existing centrifugal fan lifting devices, the present utility model is proposed.

[0005] Therefore, the problem to be solved by the utility model is that when adjusting the height of the centrifugal fan, the centrifugal fan is usually directly lifted and lowered. Direct overall lifting may cause poor stability of the overall structure of the centrifugal fan. Since the centrifugal fan is large, overall lifting may cause structural shaking and instability, thereby increasing the vibration and noise of the equipment.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a centrifugal fan lifting device, which includes a main body assembly, including a fan frame, a filter, a motor and a fan, the filter is fixed to one end of the fan frame, the motor is located in the fan frame, and the fan is fixed to one side of the motor;

[0007] The lifting component is arranged at the bottom of the fan frame, and comprises a lifting member, a limiting member and a locking member. The lifting member is arranged at the bottom of the fan frame, the limiting member is located on the lifting member, and the locking member is arranged on the limiting member.

[0008] As a preferred solution of the centrifugal fan lifting device of the utility model, the lifting member includes a lifting plate and a rack, the lifting plate is fixed to the bottom of the fan frame, and the rack is fixed to the bottom of the lifting plate.

[0009] As a preferred solution of the centrifugal fan lifting device described in the utility model, wherein: the lifting component also includes a support frame and a gear, the support frame is sleeved on the outside of the rack, the support frame and the rack are movably connected, the gear is arranged on one side of the rack, and the gear and the rack are meshed.

[0010] As a preferred solution of the centrifugal fan lifting device described in the utility model, the lifting component also includes a rotating disk and a movable bar, the rotating disk is fixed to one side of the gear, the movable bar is inserted into one side of the rotating disk, a guide groove is provided on one side of the support frame, and the movable bar slides in the guide groove.

[0011] As a preferred solution of the centrifugal fan lifting device of the utility model, the lifting member further comprises a moving rod and a handle, the moving rod is fixed to one side of the rotating disk, and the handle is fixed to one end of the moving rod.

[0012] As a preferred solution of the centrifugal fan lifting device of the utility model, the lifting member also includes a spring and a fixed plate, the spring is fixed to the top of the moving rod, the fixed plate is fixed to the top of the spring, and the fixed plate is fixed to one side of the support frame.

[0013] As a preferred solution of the centrifugal fan lifting device of the utility model, wherein: the limiting member includes a limiting plate and a pressure plate, the limiting plate is arranged on one side of the rack, and the pressure plate is fixed to one side of the limiting plate.

[0014] As a preferred solution of the centrifugal fan lifting device described in the utility model, wherein: the limiting member also includes a support shaft and a first torsion spring, the support shaft is inserted into one side of the limiting plate, the support shaft is movably connected to the limiting plate, one end of the first torsion spring is fixed to one side of the limiting plate, and the other end is fixed to the inner wall of the support frame.

[0015] As a preferred solution of the centrifugal fan lifting device of the utility model, the locking member includes a locking rod and a connecting plate, the connecting plate is fixed to the top of the pressure plate, and the locking rod is fixed to one side of the connecting plate.

[0016] As a preferred solution of the centrifugal fan lifting device described in the utility model, wherein: the locking member also includes a locking block, a support bar, a second torsion spring and a limit block, the locking block is arranged at the top of the locking rod, the support bar is inserted into one side of the locking block, the support bar and the locking block are movably connected, one end of the second torsion spring is fixed to one side of the locking block, and the other end is fixed to the inner wall of the support frame, and the limit block is fixed to the inner wall of the support frame.

[0017] The beneficial effects of the utility model are as follows: by lifting the centrifugal fan section by section, the centrifugal fan can be made more stable and balanced during the lifting process; the lifting height of each section is small, which can reduce the swaying and shaking of the overall structure, and reduce the vibration and noise caused by uneven lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 This is the overall structural diagram of the centrifugal fan lifting device.

[0020] Figure 2 This is a cross-sectional structural diagram of the fan frame of the centrifugal fan lifting device.

[0021] Figure 3 This is a cross-sectional structural diagram of the support frame of the centrifugal fan lifting device.

[0022] Figure 4 This is the pressure plate structure diagram of the centrifugal fan lifting device.

[0023] Figure 5 For centrifugal fan lifting device Figure 4 A partial enlarged structural diagram in the middle. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Example 1

[0028] Reference Figure 1 to Figure 5 , which is the first embodiment of the utility model, and this embodiment provides a centrifugal fan lifting device, which includes a main body component 100 and a lifting component 200. The cooperation of the two can make the centrifugal fan more stable and balanced during the lifting process.

[0029] The main assembly 100 includes a fan frame 101 , a filter 102 , a motor 103 and a fan 104 . The filter 102 is fixed to one end of the fan frame 101 , the motor 103 is located in the fan frame 101 , and the fan 104 is fixed to one side of the motor 103 .

[0030] The fan 104 is an impeller. The fan 104 is mainly responsible for sucking in air or gas and accelerating the rotation to generate airflow. The design and shape of the fan 104 will affect the air volume, air pressure and efficiency of the centrifugal fan. By rotating the fan 104, a high-speed airflow can be generated for applications such as ventilation, air exchange, air supply or exhaust. The motor 103 is connected to the fan 104. The motor 103 is responsible for providing power to drive the fan 104 to rotate and generate airflow. The power and speed of the motor 103 will affect the output air volume and air pressure of the centrifugal fan. The fan frame 101 is used to wrap the fan 104 and other internal components to protect, support and guide the airflow. The fan frame 101 1 can affect the flow path and pressure distribution of the airflow, and affect the performance and efficiency of the centrifugal fan. The filter 102 is usually installed at the air inlet of the fan frame 101. As a pre-filter, it can effectively block large particles, reduce the wear and pollution of the internal components of the fan frame 101, and improve the reliability and stability of the equipment. A fixing plate is sleeved on the outer side of the motor 103, and the fixing plate is movably connected to the motor 103. The fixing plate is fixed to the inner wall of the fan frame 101 to support the motor 103 and prevent the motor 103 from deflecting. One end of the motor 103 is fixed to one side of the filter 102 to ensure the stability of the motor 103.

[0031] The lifting assembly 200 is arranged at the bottom of the fan frame 101, and includes a lifting member 201, a limiting member 202 and a locking member 203. The lifting member 201 is arranged at the bottom of the fan frame 101, the limiting member 202 is located on the lifting member 201, and the locking member 203 is arranged on the limiting member 202.

[0032] By setting the lifting member 201, the fan frame 101 can be lifted section by section, so that the fan frame 101 is more stable and balanced during the lifting process. After the fan frame 101 is moved to a specified height, the fan frame 101 can be limited by setting the limiting member 202 to prevent the fan frame 101 from falling. When the fan frame 101 needs to be lowered, the fan frame 101 can be lowered section by section by setting the limiting member 202, thereby ensuring stability. After the lifting member 201 is limited, in order to prevent the limiting member 202 from being accidentally touched and causing the limit of the lifting member 201 to loosen, the limiting member 202 can be limited by setting the locking member 203.

[0033] Example 2

[0034] Reference Figure 1 to Figure 5 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0035] Specifically, the lifting member 201 includes a lifting plate 201a and a rack 201b. The lifting plate 201a is fixed to the bottom of the fan frame 101, and the rack 201b is fixed to the bottom of the lifting plate 201a.

[0036] When the fan frame 101 needs to be raised or lowered, the movement of the lifting plate 201a can drive the fan frame 101 to move, thereby enabling the fan frame 101 to be raised or lowered, and the movement of the rack 201b can drive the lifting plate 201a to move.

[0037] Specifically, the lifting member 201 further includes a support frame 201c and a gear 201d. The support frame 201c is sleeved on the outside of the rack 201b. The support frame 201c and the rack 201b are movably connected. The gear 201d is arranged on one side of the rack 201b, and the gear 201d and the rack 201b are meshed.

[0038] The support frame 201c is used to support the rack 201b to prevent the rack 201b from deflecting. When the rack 201b needs to be moved, the gear 201d is rotated to drive the rack 201b to move and make the rack 201b rise or fall.

[0039] Specifically, the lifting member 201 also includes a rotating disk 201e and a movable bar 201f. The rotating disk 201e is fixed to one side of the gear 201d. The movable bar 201f is inserted into one side of the rotating disk 201e. A guide groove X is provided on one side of the support frame 201c. The movable bar 201f slides in the guide groove X.

[0040] The gear 201d can be driven to rotate by rotating the rotating disk 201e. When the fan frame 101 needs to be raised, the rotating disk 201e is moved, and the rotating disk 201e drives the movable bar 201f to move to the bottom of the guide groove X. At this time, the gear 201d will engage with the rack 201b, and then the gear 201d can be rotated to make the rack 201b rise one section, and then the rotating disk 201e is moved in the opposite direction to move the movable bar 201f to the top of the guide groove X. At this time, the gear 201d will be separated from the rack 201b, and moving the rotating disk 201e in the opposite direction will not move the rack 201b, and then the movable bar 201f is moved to the bottom of the guide groove X again. In this reciprocating manner, the fan frame 101 can be raised section by section.

[0041] Specifically, the lifting member 201 further includes a moving rod 201g and a handle 201h. The moving rod 201g is fixed to one side of the rotating disk 201e, and the handle 201h is fixed to one end of the moving rod 201g.

[0042] A slide groove is provided on one side of the support frame 201c, and the moving rod 201g slides in the slide groove. By moving the moving rod 201g, the rotating disk 201e can be driven to move. The setting of the handle 201h is convenient for the user to move the moving rod 201g.

[0043] Specifically, the lifting member 201 further includes a spring 201i and a fixing plate 201j, the spring 201i is fixed to the top of the moving rod 201g, the fixing plate 201j is fixed to the top of the spring 201i, and the fixing plate 201j is fixed to one side of the supporting frame 201c.

[0044] When the moving rod 201g is moved, the gear 201d will be driven to rotate, and the rotation of the gear 201d will drive the rack 201b to rise one section, and the movement of the moving rod 201g will apply a pulling force to the spring 201i. When the moving rod 201g needs to be returned to its original position, the rebound force of the spring 201i can make the moving rod 201g return to its original position. The fixed plate 201j is used to support the spring 201i to prevent the spring 201i from deviating.

[0045] Specifically, the limiting member 202 includes a limiting plate 202a and a pressing plate 202b. The limiting plate 202a is disposed on one side of the rack 201b, and the pressing plate 202b is fixed on one side of the limiting plate 202a.

[0046] A movable groove is provided on one side of the support frame 201c, and the pressure plate 202b slides in the movable groove. The bottom of the limiting plate 202a is set as an inclined surface. When the rack 201b rises, the limiting plate 202a will not limit the rack 201b. After the rack 201b is raised to a specified height, the rack 201b can be limited by the setting of the limiting plate 202a to prevent the rack 201b from falling. When it is necessary to release the limit of the rack 201b, the limiting plate 202a can be used to release the limit of the rack 201b. 02b is pressed, the pressure plate 202b will drive the limit plate 202a to separate from the tooth groove on the rack 201b, and the rack 201b will drop. After pressing the pressure plate 202b once, the pressure plate 202b will return to its original position, so that the limit plate 202a and the tooth groove on the rack 201b are engaged. In this way, the rack 201b can be lowered section by section by reciprocating, or the rack 201b can be lowered all at once according to different actual usage conditions, which increases the variability during use.

[0047] Example 3

[0048] Reference Figure 4 and Figure 5 , which is the third embodiment of the utility model, and this embodiment is based on the first two embodiments.

[0049] Specifically, the limiting member 202 also includes a support shaft 202c and a first torsion spring 202d. The support shaft 202c is inserted into one side of the limiting plate 202a. The support shaft 202c is movably connected to the limiting plate 202a. One end of the first torsion spring 202d is fixed to one side of the limiting plate 202a, and the other end is fixed to the inner wall of the support frame 201c.

[0050] The support shaft 202c is fixed to the inner wall of the support frame 201c. The support shaft 202c is used to support the limit plate 202a to prevent the limit plate 202a from shifting. When the limit plate 202a moves and separates from the tooth groove on the rack 201b, a torsional force is applied to the first torsion spring 202d. Then, after the rack 201b drops one section, the pressure plate 202b is released. At this time, the force of the rotation of the first torsion spring 202d will drive the limit plate 202a to engage with the tooth groove on the rack 201b.

[0051] Specifically, the locking member 203 includes a locking rod 203a and a connecting plate 203b. The connecting plate 203b is fixed to the top of the pressing plate 202b, and the locking rod 203a is fixed to one side of the connecting plate 203b.

[0052] After the limiting plate 202a is engaged with the tooth groove on the rack 201b, in order to prevent the pressure plate 202b from being accidentally touched and moving on its own, the locking rod 203a is limited so that the pressure plate 202b can be limited to prevent the pressure plate 202b from being accidentally touched and moving on its own. There are two connecting plates 203b, which are respectively fixed on both sides of the locking rod 203a. The connecting plates 203b are used to support the locking rod 203a to prevent the locking rod 203a from deviating.

[0053] Specifically, the locking member 203 also includes a locking block 203c, a support bar 203d, a second torsion spring 203e and a limit block 203f. The locking block 203c is arranged at the top of the locking rod 203a, the support bar 203d is inserted into one side of the locking block 203c, the support bar 203d and the locking block 203c are movably connected, one end of the second torsion spring 203e is fixed to one side of the locking block 203c, and the other end is fixed to the inner wall of the support frame 201c, and the limit block 203f is fixed to the inner wall of the support frame 201c.

[0054] The locking block 203c is provided with a locking groove corresponding to the locking rod 203a. When the pressure plate 202b returns to its original position, it will drive the locking rod 203a to move to one side of the locking block 203c. At this time, the locking block 203c will be squeezed to lift one end of the locking block 203c. When one end of the locking block 203c is lifted, a torsional force can be applied to the second torsion spring 203e. When the locking rod 203a moves to the bottom of the locking groove, the rotation force of the second torsion spring 203e will drive the locking block 203c to return to its original position, so that the locking rod 203a is engaged with the locking groove, thereby limiting the pressure plate 202b. The support bar 203d is fixed to the inner wall of the support frame 201c. The support bar 203d It is used to support the locking block 203c to prevent the locking block 203c from shifting. When it is necessary to release the limit on the pressure plate 202b, the locking block 203c is moved to separate the locking block 203c from the locking rod 203a. At this time, in order to prevent the rotation force of the second torsion spring 203e from driving the locking block 203c to return to its original position, the locking block 203c is engaged with the limit block 203f to limit the locking block 203c. When it is necessary to release the limit on the locking block 203c, the pull rod at one end of the locking block 203c is pulled to separate the locking block 203c from the limit block 203f, thereby releasing the limit on the locking block 203c.

[0055] When in use, when the height of the fan frame 101 needs to be adjusted, the handle 201h is moved, and the handle 201h drives the moving rod 201g to move. The movement of the moving rod 201g applies a pulling force to the spring 201i, and the moving rod 201g drives the rotating disk 201e to move. The rotating disk 201e can drive the gear 201d to rotate. When the fan frame 101 needs to be raised, the rotating disk 201e is moved, and the rotating disk 201e drives the movable bar 201f to move to the bottom of the guide groove X. At this time, the gear 201d will engage with the rack 201b, and then the gear 201d can be rotated to make the rack 201b rise one section, and then the movable rod 201g can be returned to its original position by the rebound force of the spring 201i, so that the movable bar 201f moves to the top of the guide groove X. At this time, the gear 201d will be separated from the rack 201b, and moving the rotating disk 201e in the opposite direction will not move the rack 201b, and then the movable bar 201f is moved to the bottom of the guide groove X again. In this reciprocating manner, the fan frame 101 can be raised section by section.

[0056] When the fan frame 101 needs to be lowered, the limit on the pressure plate 202b is first released, and the locking block 203c is moved. When one end of the locking block 203c is lifted, a torsional force can be applied to the second torsion spring 203e, and the locking block 203c moves and separates from the locking rod 203a. At this time, in order to prevent the rotation force of the second torsion spring 203e from driving the locking block 203c to return to its original position, the locking block 203c can be limited by engaging the locking block 203c with the limit block 203f. At this time, the limit on the locking rod 203a is released, thereby releasing the limit on the pressure plate 202b.

[0057] Then, the pressure plate 202b is pressed, and the pressure plate 202b will drive the limit plate 202a to separate from the tooth groove on the rack 201b. When the limit plate 202a moves and separates from the tooth groove on the rack 201b, a torsional force is applied to the first torsion spring 202d. Then, after the rack 201b is lowered by one section, the pressure plate 202b is released. At this time, the force of the rotation of the first torsion spring 202d will drive the limit plate 202a to engage with the tooth groove on the rack 201b, so that the rack 201b can be lowered section by section by reciprocating.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A centrifugal fan lifting device, characterized in that: include, A main body component (100) comprises a fan frame (101), a filter (102), a motor (103) and a fan (104), wherein the filter (102) is fixed to one end of the fan frame (101), the motor (103) is located inside the fan frame (101), and the fan (104) is fixed to one side of the motor (103); The lifting component (200) is arranged at the bottom of the fan frame (101), and comprises a lifting member (201), a limiting member (202) and a locking member (203); the lifting member (201) is arranged at the bottom of the fan frame (101), the limiting member (202) is located on the lifting member (201), and the locking member (203) is arranged on the limiting member (202).

2. The centrifugal fan lifting device according to claim 1, characterized in that: The lifting member (201) comprises a lifting plate (201a) and a rack (201b); the lifting plate (201a) is fixed to the bottom of the fan frame (101); and the rack (201b) is fixed to the bottom of the lifting plate (201a).

3. The centrifugal fan lifting device according to claim 2, characterized in that: The lifting member (201) further comprises a support frame (201c) and a gear (201d); the support frame (201c) is sleeved on the outside of the rack (201b); the support frame (201c) and the rack (201b) are movably connected; the gear (201d) is arranged on one side of the rack (201b); and the gear (201d) and the rack (201b) are meshed.

4. The centrifugal fan lifting device according to claim 3, characterized in that: The lifting member (201) further comprises a rotating disk (201e) and a movable bar (201f); the rotating disk (201e) is fixed to one side of the gear (201d); the movable bar (201f) is plugged into one side of the rotating disk (201e); a guide groove (X) is provided on one side of the support frame (201c); and the movable bar (201f) slides in the guide groove (X).

5. The centrifugal fan lifting device according to claim 4, characterized in that: The lifting member (201) further comprises a moving rod (201g) and a handle (201h), wherein the moving rod (201g) is fixed to one side of the rotating disk (201e), and the handle (201h) is fixed to one end of the moving rod (201g).

6. The centrifugal fan lifting device according to claim 5, characterized in that: The lifting member (201) further comprises a spring (201i) and a fixing plate (201j), wherein the spring (201i) is fixed to the top of the moving rod (201g), the fixing plate (201j) is fixed to the top of the spring (201i), and the fixing plate (201j) is fixed to one side of the supporting frame (201c).

7. The centrifugal fan lifting device according to claim 5 or 6, characterized in that: The limiting member (202) comprises a limiting plate (202a) and a pressing plate (202b); the limiting plate (202a) is arranged on one side of the rack (201b); and the pressing plate (202b) is fixed on one side of the limiting plate (202a).

8. The centrifugal fan lifting device according to claim 7, characterized in that: The limiting member (202) further comprises a support shaft (202c) and a first torsion spring (202d); the support shaft (202c) is plugged into one side of the limiting plate (202a); the support shaft (202c) is movably connected to the limiting plate (202a); one end of the first torsion spring (202d) is fixed to one side of the limiting plate (202a), and the other end is fixed to the inner wall of the support frame (201c).

9. The centrifugal fan lifting device according to claim 8, characterized in that: The locking member (203) comprises a locking rod (203a) and a connecting plate (203b), wherein the connecting plate (203b) is fixed to the top of the pressing plate (202b), and the locking rod (203a) is fixed to one side of the connecting plate (203b).

10. The centrifugal fan lifting device according to claim 9, characterized in that: The locking member (203) further comprises a locking block (203c), a supporting bar (203d), a second torsion spring (203e) and a limiting block (203f); the locking block (203c) is arranged at the top of the locking rod (203a); the supporting bar (203d) is plugged into one side of the locking block (203c); the supporting bar (203d) and the locking block (203c) are movably connected; one end of the second torsion spring (203e) is fixed to one side of the locking block (203c) and the other end is fixed to the inner wall of the supporting frame (201c); and the limiting block (203f) is fixed to the inner wall of the supporting frame (201c).

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